Divide: x2−1x÷x−1x2\dfrac{x^2 - 1}{x} \div \dfrac{x - 1}{x^2}xx2−1÷x2x−1.
x(x+1)x(x+1)x(x+1)
x+1x\dfrac{x+1}{x}xx+1
x−1x-1x−1
x2(x−1)x^2(x-1)x2(x−1)